Infectious Disease Epidemiology Program
The hepatitis A virus (HAV) can cause liver disease and last from several weeks to a few months. The virus spreads more easily where there is poor sanitary conditions and personal hygiene. Poor hand washing may increase the risk of transmission especially before the preparation of food. HAV does not lead to chronic infection. A vaccine is available to prevent getting this disease and is recommended for all children starting at age 1 and for travelers to certain countries.